<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="https://unpkg.com/vue@next"></script>
<div id="app">
    <p :style="{whiteSpace:'pre-line'}">Mult content: {{message}}</p>
    <textarea v-model="message" placeholder="add multiple lines" name="" id="" cols="30" rows="10"></textarea>
</div>
<script>
    const vueOpt = {
        data(){
            return {
                message: ''
            }
        }
    }

    Vue.createApp(vueOpt).mount('#app')
</script>
</body>
</html>
